Malicious PDF — malware analysis report

Static analysis result for SHA-256 05303b26eac313ee…

MALICIOUS

PDF

68.0 KB Created: 2020-11-22 17:21:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 2386413980605ed6cabfa805057a372a SHA-1: 97f0ebda7ef9cc8f2846835f944a62f20349d7c2 SHA-256: 05303b26eac313eece68f83df6afefc8e04de2f381ddb6cbe3c1eeea5b04d8b3
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://traffking.ru/123?utm_term=pokemon+platinum+explorer+kit+guide PDF link annotation
    • https://luwujapi.weebly.com/uploads/1/3/4/7/134751522/furiremivuxakazalur.pdfIn PDF document text
    • https://zenisitidijo.weebly.com/uploads/1/3/4/3/134309999/dilevagisulul.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451375/normal_5fa398462658d.pdfIn PDF document text
    • https://botubadixebom.weebly.com/uploads/1/3/1/4/131407995/luginovinib_latukobil_nimijuxijubijij_zavogixesuge.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/lupebesu/81883686496.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38435106-6ebc-4227-95b3-5fe553b11a22/56299628873.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9230216-7308-4169-815d-8be8c72a64e3/sepewefofupup.pdfIn PDF document text
    • https://s3.amazonaws.com/sinamozagemoger/721095686.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70579e42-f274-4a63-af21-8fd690659af5/academia_santa_rosa_de_lima_bayamon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/759465b5-3108-4249-a647-a3effd2db8b2/sazugimujipepe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3501335-400b-4cbc-ae57-2dfc95a9681f/xokopepitufuxurofamebixa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b227872-5044-4bc8-8c87-1fe93df056b6/small_boats_minecraft_mod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71cbc37e-26cb-40ff-84bf-c647ca18ebf1/2492606718.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cce8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCE8 5232 bytes
SHA-256: b4970eae5e9ef00b0850fe8b45d38e33165339a5fdbe927511afb8dd01fa9b1a
font_01_sfnt_off0000dea8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEA8 10644 bytes
SHA-256: 55c5481e81a00e8542eeccf1a8d9851fce73b9cee165b13f43266420e0edac55

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